Pregnancy evolved multiple times independently in a diversity of species and habitats and displays one of the best examples of convergent evolution. Its evolution entails drastic morphological, physiological and immunological adaptations. Yet research focused predominantly on mammalian pregnancy where both Major Histocompatibility Complex pathways (MHC I and II) are suppressed to prevent semi-allogenic embryo rejection.
Open to the public.
- Thu, Feb 25, 2021, 12:30 pm
- Thu, Feb 4, 2021, 12:30 pm
One of the most striking patterns of evolution is its uneven tempo across the tree of life. Whereas some traits and lineages diversify rapidly, others appear to remain inert over millions of years. But, why is this so? What allows some features to achieve evolutionary overdrive, whereas others appear to straddle evolution's slow lane? I explore this question by focusing on one of evolution's key architects: behavior. I illustrate how organisms are not the passive targets of selection; rather, through behavior, they can be the agents of selection.
- Thu, Mar 26, 2020, 12:30 pm
- Thu, Mar 12, 2020, 12:30 pm
Cuvier’s beaked whales, Ziphius cavirostris, make foraging dives that last for more than two hours and to depths of more than 3,000m; these are the longest and deepest dives recorded for any mammal. The whales are particularly challenging study animals because they occur in deep water, far from shore, and spend very little time at the surface. The species is known to be vulnerable to exposure to tactical military sonars and several high-profile mass stranding events have followed naval training exercises in the Bahamas, Canary Islands and Mediterranean.
- Thu, Mar 5, 2020, 12:30 pm
Domesticated species are an interesting group of organisms that have co-evolved with Homo sapiens, and have begun important in human survival and fitness. Using both genomic and archaeological data, we trace the origin and evolution of Asian rice, Oryza sativa, the most important food crop in the planet. We provide evidence that O.